A Reappraisal of  Subtropical Subsurface Water Ice Stability on Mars

L.Lange, F.Forget, M.Vincendon, A.Spiga, E.Vos, O.Aharonson, E.Millour, A.Bierjon, R.Vandemeulebrouck

Laboratoire de Météorologie Dynamique
Copyright 2023. All rights reserved.

Corresponding author: Lucas Lange
Laboratoire de Météorologie Dynamique
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mailto: lucas.lange@lmd.ipsl.fr


Supporting information associated with the paper "A Reappraisal of  Subtropical Subsurface Water Ice Stability on Mars" by L. Lange et al. consists of 11 files generated as part of this work and used to generate several of the figures of this paper:


- Fig1_Fit_Vincendon2010.txt is a 271 x 2 table of floats in ASCII format containing the solar longitude (°) (first column)  and the maximum latitudinal extent (°)  of CO2 ice in the Southern Hemisphere on 30° pole-facing slope at a given Ls (second column) predicted by Vincendon et al. (2010).

- Fig_1_Fit_co2frost_withoutssi.txt is a 271 x 2 table of floats in ASCII format containing the solar longitude (°) (first column)  and the maximum latitudinal extent (°)  of CO2 ice in the Southern Hemisphere on 30° pole-facing slope at a given Ls (second column) predicted by our model, without subsurface ice.

- Fig_1_Fit_co2frost_withssi.txt is a 271 x 2 table of floats in ASCII format containing the solar longitude (°) (first column)  and the maximum latitudinal extent (°)  of CO2 ice in the Southern Hemisphere on 30° pole-facing slope at a given Ls (second column) predicted by our model, with subsurface ice.

- Fig2_CompTsurfFlux.txt is a 7909 x 5 table of floats in ASCII format containing the solar longitude (°) (first column, ranging from 0° to 360°, resolution:0.0424°), the solar flux (W/m^2) on a 30° south facing slopes at 25°S computed with the 1D model (2nd column); the surface temperature (K) on a 30° south facing slopes at 25°S computed with the 1D model (3rd column); the solar flux (W/m^2) on a 30° south facing slopes at 25°S computed with the 3D model with the sub-grid slope parameterization (4th column); the surface temperature (K) on a 30° south facing slopes at 25°S computed with the 3D model with the sub-grid slope parameterization (5th column)

- Fig2_CompTsurfFlux.txt is a 21 x 4810  table of floats in ASCII format containing:
   * First row: the altitude (km)
   * Last line: the solar longitude (°)
   * Else: the difference of atmospheric temperature (K) above a 30° pole-facing slope between the 1D model and 3D model

- Fig3_ssi_flat.txt is a 49 x 65  table of floats in ASCII format containing the ice table depth (m) beneath a flat surface derived using the current near-surface humidity (x-axis: longitude: -180° -> + 180°; y-axis: latitude: -90° -> + 90°). -1 is for no subsurface ice.

- Fig3_ssi_slope.txt is a 49 x 65  table of floats in ASCII format containing the ice table depth (m) beneath a 30° pole-facing slope derived using the current near-surface humidity (x-axis: longitude: -180° -> + 180°; y-axis: latitude: -90° -> + 90°). -1 is for no subsurface ice.


==== Supplementary ===

- Fig_S2_subsidence.txt is a 36 x 49  table of floats in ASCII format containing:
   * First row: the altitude (km)
   * Last line: the latitude (°N)
   * Else: the atmospheric temperature (K) above a flat surface computed by the 3D model

- Fig_S3_RelativeFIR.txt is a 7903 x 3 table of floats in ASCII format containing the solar longitude (°) (first column, ranging from 0° to 360°, resolution:0.0424°); the relative difference of infrared flux (1) computed by the 1D and the 3D model on a 30° pole facing slope at 37.5°S (2nd column); the relative difference of infrared flux (1) computed by the 1D and the 3D model on a 30° pole facing slope at 45°S (3rd column)

- FigS5_ssi_flat_triplehumidity.txt is a 49 x 65  table of floats in ASCII format containing the ice table depth (m) beneath a flat surface derived using the current near-surface humidity (x-axis: longitude: -180° -> + 180°; y-axis: latitude: -90° -> + 90°). -1 is for no subsurface ice.

- FigS5_ssi_slope_triplehumidity.txt is a 49 x 65  table of floats in ASCII format containing the ice table depth (m) beneath a 30° pole-facing slope derived using the current near-surface humidity (x-axis: longitude: -180° -> + 180°; y-axis: latitude: -90° -> + 90°). -1 is for no subsurface ice.
